溝槽管道的安裝工藝

1、溝糟管道的安裝工藝a. 管道安裝機具準備：選擇符合要求滾槽機、開孔機和切管機；管道準備：垂直切割管道，活潔和加工管端凹槽，加工時小心管道爆裂，和出現鋒利邊沿，鋒利邊沿可能損壞密封圈，凹槽寬度和深度，必須符合凹槽技術標準。檢查和潤滑密封圈：檢查密封圈，確封圈規(guī)格正確。在密封圈外部和部密封唇上，涂薄薄一層潤滑劑。應小心不要將顆粒雜質黏附在密封圈表面。使用潤滑劑作為密封圈的配件。優(yōu)良的密封圈潤滑劑是防止密封圈磨損和可能損傷的基礎。（如下圖）密封圈安裝滑動密封圈到管端，確封唇不要懸垂在管端。（如下圖）密封圈定位將密封圈在靠攏的兩側管端上定位后，把密封圈拉到兩側管端凹槽的中心位置。密封圈不應進入管道凹槽

2、。（如下圖）安裝連接器外殼把外殼合在密封圈上，使殼體卡口咬合在管道凹槽，插入螺栓，用手擰緊螺帽。（如下圖）擰緊螺帽交替、均勻地擰緊兩側螺帽，直到螺栓底座金屆面接觸，螺栓收緊b. 機械三通、機械四通安裝先從外殼上去掉一個螺栓，松開另一螺帽直到與螺栓端頭平,將下殼旋離上殼約90度，把上殼出口部分放在管口開口處對中并與孔成一直線，在沿管端旋轉下殼（如是機械四通，下殼方法與上殼相同）使上下兩塊合攏。c. 法蘭片安裝安裝法蘭片：先松開兩側螺絲，將法蘭兩塊分開，分別將兩塊法蘭片的環(huán)形鍵部分裝入開槽管端凹槽里，再把兩側螺絲插入擰緊，調節(jié)兩側間隙相近。安裝密封圈將密封H"C形開口處背對法蘭，沿管端方

3、向推入法蘭徑凹槽即可d. 選擇符合要求的橡膠密封圈附（表一）e. 管外徑與溝槽加工尺寸附（表二）f. 管道支吊架安裝附（表三）g. 管道加工尺寸附（表五）h. 質量要求管道安裝時應考慮管間隙量，也就是鋼管的膨脹量。管道安裝后要進行試壓檢查是否泄漏。如有泄漏其原因如下：螺栓沒擰緊，卡箍接觸面有間隙。溝槽加工深度應符合要求。密封面不應有雜質。鋼管端部密封面有傷痕或溝線狀傷痕不能安裝密封圈不能有啃圈。鋼管外徑不能超差。加工后鋼管端部至溝槽距離不能小。安裝不符合要求，超過規(guī)定的轉角。鋼管開孔引分支.在管路中引出分支，首先必須在管道開孔，孔必須開在管道中心線上并且尺寸要正確，開孔要用專用工具.附（表四）

4、孔開好后檢查孔周圍16mm圍的管表面活潔、光滑、無污物、皮屑、凸出物方可安裝。表一橡膠密封圈的選擇橡膠原料應用圍橡膠圈色標記天然橡膠用丁-35C+80C的水和無油氣體黑色乙丙橡膠用用丁-30C+100C一般介質、耐老化綠色丁晴橡膠用丁-40C+120C的油、油霧和煤氣橙色鹵化丁橡膠不含油、含有多種稀酸的水和氣體棕色氯橡膠用丁-20C-200C以下化學物品藍色白色丁晴橡膠不含碳黑、可用丁食品白色氯丁橡膠一定圍的潤滑油及化學品黃色有機硅橡膠用丁-40C-250C以下的不帶輕類的空氣紅色表二管外徑與溝槽加工尺寸表單位：mm鋼管外徑尺寸溝槽至管徑尺寸溝槽寬度溝槽外徑（C）標準最大最小標準最大最小標準最

5、大最大最大最小42.242.641.815.916.615.17.147.906.3838.9938.6148.348.847.815.916.615.17.147.906.3845.0944.7060.360.959.715.916.615.18.749.507.9857.1556.7776.176.975.315.916.615.18.749.507.9872.2671.8088.989.788.115.916.615.18.749.507.9884.9484.48108.0108.8107.215.916.615.18.749.507.98103.70102.94114.3115.411

6、3.515.916.615.18.749.507.98110.10109.57.7141.1.915.916.615.18.749.507.98135.48134.97159.0160.4158.015.916.615.18.749.507.98153.41152.65165.1166.7164.315.916.615.18.749.507.98160.78160.22168.3169.9167.519.116.615.18.749.507.98.96.40219.1220.7218.319.119.818.311.9112.6711.15213.70212.98273.0274.6272.2

7、19.119.818.311.9112.6711.15267.60266.93325.0326.6324.219.119.818.311.9112.6711.15318.29317.53表三管道支吊架安裝公稱管徑D.N用剛性接頭每根管吊架數用撓性接頭每根管吊架數對6m長管對9m長管對6m長管對9m長管502334652323802323100232312523231502323200232325023233002323表四管道分支開孔尺寸表主管外徑（mrj）支管外徑（mrj）開孔直徑（mr）014226260242212603482626044826260557.0:60.348.038106

8、57.0:60.342.33810757.0:60.333.53810857.0:60.326.838r0976.148.0441076.142.344rii76.133.5381276.126.8381388.960.0641488.948.051-1588.942.3511688.933.5441788.926.84418108.0(75.5):76.17019108.060.37020108.048.05121108.042.35122108.033.55123108.026.838r24114.0(88.5):88.918925114.0(75.5):76.17026114.060.3

9、7027114.048.05128114.04225129114.033.551P30114.02683831140.0114.011432140.0(88.5):88.98933140.0(75.5):76.17034140.060.3703514004805136140.042.35137,140.03355138165.0114.0114391650(885):8898940165.0(75.5):76.17041165.060.370r42165.048.0了5143165.042.35144165.033.55145159.0108.011446159.060.370英制公稱直徑標準

10、上公差下公差標準上公差下公差標準上公差下公差最大最小2/4DN2026.72726.515.8816.6415.127.147.96.3823.8323.441.421.6529.21DN2533.433.733.115.8816.6415.127.147.96.3830.2329.851.61.6536.31"DN3242.242.641.815.8816.6415.127.147.96.3838.9938.611.61.6545I"，DN4048.348.847.815.8816.6415.127.147.96.3845.0944.71.61.6551.12DN5060

11、.360.959.715.8816.6415.128.749.57.9857.1556.771.61.656321/27373.772.315.8816.6415.128.749.57.9869.0968.631.982.1175.723/4DN7076.176.975.315.8816.6415.128.749.57.9872.2671.81.982.1178.73DN8088.989.788.115.8816.6415.128.749.57.9884.9484.481.982.1191.4101.6102.6100.815.8816.6415.128.749.57.9897.3896.87

12、2.112.11104.14DN100114.3115.4113.515.8816.6415.128.749.57.98110.08109.572.112.11116.8127128.3.215.8816.6415.128.749.57.98112.78122.272.112.41129.5.7141.1.915.8816.6415.128.749.57.98135.48134.972.112.77142.25DN125141.3142.7140.515.8816.6415.128.749.57.98137.03136.472.132.77143.8152.4153.8151.615.8816

13、.64r15.128.749.57.98P148.08147.522.162.77154.96DN150158.8160.415815.8816.6415.128.749.57.98153.21152.452.162.77161.36DN150165.1166.7164.315.8816.6415.128.749.57.98160.78160.222.162.77167.6168.3169.9167.515.8816.6415.128.749.57.98.96.42.162.77170.9203.2204.8202.419.0519.8118.2911.9112.6711.15198.53197.892.342.77207.58DN200219.1220.7218.319.0519.8118.2911.9112.6711.15214.4213.762.342.77223.